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139 lines
8.8 KiB
Java
139 lines
8.8 KiB
Java
/*
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* Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @summary Check assignability of narrowing p.c. with constant expressions vs exact conversion methods
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* @library /tools/lib/types
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* @modules jdk.compiler/com.sun.tools.javac.code
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* jdk.compiler/com.sun.tools.javac.comp
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* jdk.compiler/com.sun.tools.javac.file
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* jdk.compiler/com.sun.tools.javac.util
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* jdk.compiler/com.sun.tools.javac.main
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* jdk.compiler/com.sun.tools.javac.tree
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* @build TypeHarness
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* @compile PrimitiveUnconditionallyExactInAssignability.java
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* @run main PrimitiveUnconditionallyExactInAssignability
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*/
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import com.sun.tools.javac.code.Type;
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import com.sun.tools.javac.code.TypeTag;
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import java.lang.runtime.ExactConversionsSupport;
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import static com.sun.tools.javac.code.TypeTag.ERROR;
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import static com.sun.tools.javac.code.TypeTag.INT;
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public class PrimitiveUnconditionallyExactInAssignability extends TypeHarness {
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PrimitiveUnconditionallyExactInAssignability() {
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}
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void assertOriginalAssignmentNarrowingAndUnconditionality() {
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// byte b = <constant short> vs ExactConversionsSupport::isIntToByteExact
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assertOriginaAndUpdatedAssignable(fac.Constant(Short.MIN_VALUE), predef.byteType, ExactConversionsSupport.isIntToByteExact(Short.MIN_VALUE));
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assertOriginaAndUpdatedAssignable(fac.Constant((short) (Byte.MIN_VALUE - 1)), predef.byteType, ExactConversionsSupport.isIntToByteExact((short) (Byte.MIN_VALUE - 1)));
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assertOriginaAndUpdatedAssignable(fac.Constant((short) (Byte.MAX_VALUE + 1)), predef.byteType, ExactConversionsSupport.isIntToByteExact((short) (Byte.MAX_VALUE + 1)));
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assertOriginaAndUpdatedAssignable(fac.Constant(Short.MAX_VALUE), predef.byteType, ExactConversionsSupport.isIntToByteExact(Short.MAX_VALUE));
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// byte b = <constant char> vs ExactConversionsSupport::isIntToByteExact
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assertOriginaAndUpdatedAssignable(fac.Constant(Character.MIN_VALUE), predef.byteType, ExactConversionsSupport.isIntToByteExact(Character.MIN_VALUE));
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assertOriginaAndUpdatedAssignable(fac.Constant((char) (Byte.MAX_VALUE + 1)), predef.byteType, ExactConversionsSupport.isIntToByteExact((char) (Byte.MAX_VALUE + 1)));
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assertOriginaAndUpdatedAssignable(fac.Constant(Character.MAX_VALUE), predef.byteType, ExactConversionsSupport.isIntToByteExact(Character.MAX_VALUE));
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// byte b = <constant int> vs ExactConversionsSupport::isIntToByteExact
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assertOriginaAndUpdatedAssignable(fac.Constant(Integer.MIN_VALUE), predef.byteType, ExactConversionsSupport.isIntToByteExact(Integer.MIN_VALUE));
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assertOriginaAndUpdatedAssignable(fac.Constant((int) (Byte.MIN_VALUE - 1)), predef.byteType, ExactConversionsSupport.isIntToByteExact((int) (Byte.MIN_VALUE - 1)));
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assertOriginaAndUpdatedAssignable(fac.Constant((int) (Byte.MAX_VALUE + 1)), predef.byteType, ExactConversionsSupport.isIntToByteExact((int) (Byte.MAX_VALUE + 1)));
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assertOriginaAndUpdatedAssignable(fac.Constant(Integer.MAX_VALUE), predef.byteType, ExactConversionsSupport.isIntToByteExact(Integer.MAX_VALUE));
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// char c = <constant short> vs ExactConversionsSupport::isIntToCharExact
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assertOriginaAndUpdatedAssignable(fac.Constant(Short.MIN_VALUE), predef.charType, ExactConversionsSupport.isIntToCharExact(Short.MIN_VALUE));
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assertOriginaAndUpdatedAssignable(fac.Constant((short) (Character.MIN_VALUE - 1)), predef.charType, ExactConversionsSupport.isIntToCharExact((short) (Character.MIN_VALUE - 1)));
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assertOriginaAndUpdatedAssignable(fac.Constant((short) (Character.MAX_VALUE + 1)), predef.charType, ExactConversionsSupport.isIntToCharExact((short) (Character.MIN_VALUE + 1)));
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assertOriginaAndUpdatedAssignable(fac.Constant(Short.MAX_VALUE), predef.charType, ExactConversionsSupport.isIntToCharExact(Short.MAX_VALUE));
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// char c = <constant int> vs ExactConversionsSupport::isIntToCharExact
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assertOriginaAndUpdatedAssignable(fac.Constant(Integer.MIN_VALUE), predef.charType, ExactConversionsSupport.isIntToCharExact(Integer.MIN_VALUE));
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assertOriginaAndUpdatedAssignable(fac.Constant((int) (Character.MIN_VALUE - 1)), predef.charType, ExactConversionsSupport.isIntToCharExact((int) (Character.MIN_VALUE - 1)));
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assertOriginaAndUpdatedAssignable(fac.Constant((int) (Character.MAX_VALUE + 1)), predef.charType, ExactConversionsSupport.isIntToCharExact((int) (Character.MAX_VALUE + 1)));
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assertOriginaAndUpdatedAssignable(fac.Constant(Integer.MAX_VALUE), predef.charType, ExactConversionsSupport.isIntToCharExact(Integer.MAX_VALUE));
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// short b = <constant char> vs ExactConversionsSupport::isIntToShortExact
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assertOriginaAndUpdatedAssignable(fac.Constant(Character.MIN_VALUE), predef.shortType, ExactConversionsSupport.isIntToShortExact(Character.MIN_VALUE));
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assertOriginaAndUpdatedAssignable(fac.Constant((char) (Character.MAX_VALUE + 1)), predef.shortType, ExactConversionsSupport.isIntToShortExact((char) (Character.MAX_VALUE + 1)));
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assertOriginaAndUpdatedAssignable(fac.Constant(Character.MAX_VALUE), predef.shortType, ExactConversionsSupport.isIntToShortExact(Character.MAX_VALUE));
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// short b = <constant int> vs ExactConversionsSupport::isIntToShortExact
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assertOriginaAndUpdatedAssignable(fac.Constant(Integer.MIN_VALUE), predef.shortType, ExactConversionsSupport.isIntToShortExact(Integer.MIN_VALUE));
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assertOriginaAndUpdatedAssignable(fac.Constant((int) (Short.MIN_VALUE - 1)), predef.shortType, ExactConversionsSupport.isIntToShortExact((int) (Short.MIN_VALUE - 1)));
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assertOriginaAndUpdatedAssignable(fac.Constant((int) (Short.MAX_VALUE + 1)), predef.shortType, ExactConversionsSupport.isIntToShortExact((int) (Short.MAX_VALUE + 1)));
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assertOriginaAndUpdatedAssignable(fac.Constant(Integer.MAX_VALUE), predef.shortType, ExactConversionsSupport.isIntToShortExact(Integer.MAX_VALUE));
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}
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// where
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public void assertOriginaAndUpdatedAssignable(Type s, Type t, boolean expected) {
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assertAssignable(s, t, originalIsAssignable(s, t));
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}
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public boolean originalIsAssignable(Type t, Type s) {
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if (t.hasTag(ERROR))
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return true;
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if (t.getTag().isSubRangeOf(INT) && t.constValue() != null) {
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int value = ((Number)t.constValue()).intValue();
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switch (s.getTag()) {
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case BYTE:
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case CHAR:
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case SHORT:
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case INT:
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if (originalCheckRange(s.getTag(), value))
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return true;
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break;
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}
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}
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return types.isConvertible(t, s);
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}
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public boolean originalCheckRange(TypeTag that, int value) {
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switch (that) {
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case BOOLEAN:
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return 0 <= value && value <= 1;
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case BYTE:
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return Byte.MIN_VALUE <= value && value <= Byte.MAX_VALUE;
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case CHAR:
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return Character.MIN_VALUE <= value && value <= Character.MAX_VALUE;
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case SHORT:
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return Short.MIN_VALUE <= value && value <= Short.MAX_VALUE;
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case INT:
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return true;
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default:
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throw new AssertionError();
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}
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}
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private void error(String msg) {
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throw new AssertionError("Unexpected result in original isAssignable: " + msg);
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}
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public static void main(String[] args) {
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PrimitiveUnconditionallyExactInAssignability harness = new PrimitiveUnconditionallyExactInAssignability();
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harness.assertOriginalAssignmentNarrowingAndUnconditionality();
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}
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}
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